// object 非原始数据类型
let o1: object = { username: 'jack' }
let o2: object = [1, 2]
let o3: object = function() {
  console.log(111)
}

// let o4: object = 1 // 报错 因为1是原始数据类型

let o5: Object = 1 //

let o6: {} = {}